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Illinois ZIP Codes
Rock Island County
Port Byron, IL
61275
61275 ZIP Code — Port Byron, IL
Rock Island County, Illinois
ZIP code 61275 is located in
Port Byron ,
Illinois ,
within Rock Island County .
It covers approximately 33.25 square miles and serves a population of
4,393 residents.
This is a standard ZIP code in the Central (CT) timezone,
served by area code 309 .
About ZIP code 61275
The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $237,600. Owner-occupancy is high at 85%, well above the national average.
Median household income is $93,077. The poverty rate of 7% is below the national average. 37% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 23 minutes is near the national average.
Educational attainment is near the national average, with 32% of residents holding a bachelor's degree or higher.
Overall, ZIP code 61275 reflects a community defined by high homeownership and a significant Social Security-dependent population.
61275 ZIP code map
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Cities in ZIP code 61275
Below are the cities the US Postal Service accepts for ZIP code 61275. Using any city not on this list may result in mail delivery delays.
Nearby ZIP codes
Demographics
updated 05/2026
Population
Total population
4,393
Population density
132 / sq mi
State FIPS
17
County FIPS
161
Geography
Land area
33.25 sq mi
Water area
1.14 sq mi
Latitude
41.5925
Longitude
-90.2968
Timezone
Central (CT)
Area code
309
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
29.4%
43.5%
37.2%
$50k – $100k
31.4%
33.1%
29.6%
$100k – $200k
33.4%
19.8%
24.4%
Over $200k
5.8%
3.5%
8.8%
Demographics & statistics
$93,077
Median household income
$237,600
Median home value
32.4%
Bachelor's or higher
Age distribution
Age summary
Group Count %
Under 18 1,005 22.9%
18 and over 3,388 77.1%
65 and over 878 20.0%
Median age 46.6 years
Race & ethnicity
Black or African American
1.8%
American Indian / Alaska Native
0.4%
Group Count %
White 3,886 84.1%
Two or more races 383 8.3%
Hispanic or Latino 228 4.9%
Black or African American 85 1.8%
Other race 20 0.4%
American Indian / Alaska Native 19 0.4%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
29.4%
43.5%
37.2%
$50k – $100k
31.4%
33.1%
29.6%
$100k – $200k
33.4%
19.8%
24.4%
Over $200k
5.8%
3.5%
8.8%
Range % of households
Under $10k 2.3%
$10k–$15k 2.0%
$15k–$25k 5.2%
$25k–$35k 5.2%
$35k–$50k 5.4%
$50k–$75k 18.4%
$75k–$100k 14.6%
$100k–$150k 21.9%
$150k–$200k 9.4%
$200k+ 15.6%
Median income $93,077
Housing
Housing overview
Metric Value
Median home value $237,600
Median rent / month $639
Owner occupied 84.8%
Renter occupied 15.2%
Vacant 4.2%
Single-family detached 83.2%
Large apartment buildings 0.2%
Mobile homes 9.4%
Median rooms 6.3
Avg household size (owned) 2.65
Year built
Era %
2020 or later 0.9%
2010–2019 4.8%
2000–2009 12.0%
1990–1999 11.9%
1980–1989 9.5%
1970–1979 23.1%
1960–1969 11.7%
1950–1959 10.3%
1940–1949 2.7%
1939 or earlier 13.0%
Bedrooms
Size % of units
No bedroom (studio) 0.5%
1 bedroom 2.4%
2 bedrooms 16.3%
3 bedrooms 51.2%
4 bedrooms 24.4%
5+ bedrooms 5.1%
Vehicles per household
Vehicles % of households
No vehicle 3.1%
1 vehicle 20.6%
2 vehicles 43.2%
3 or more 33.1%
Heating fuel
Fuel type %
Utility gas 78.4%
Electricity 13.7%
Propane / LP gas 7.1%
No fuel used 0.8%
Households & families
Household type Count %
Married-couple family 1,094 63.4%
Cohabiting couple 122 7.1%
Male householder, no spouse 193 11.2%
Female householder, no spouse 317 18.4%
Households with children under 18 514 29.8%
Households with seniors (65+) 647 37.5%
Average household size 2.55
Marital status
Status Male Female
Never married 21.8% 22.7%
Married 65.7% 59.2%
Separated 0.6% 0.7%
Widowed 3.5% 10.6%
Divorced 8.4% 6.8%
Education
Some college, no degree
23.7%
Graduate / professional
11.4%
Metric %
HS diploma or higher 96.0%
Bachelor's or higher 32.4%
School enrollment (ages 3–17)
Type Count %
Nursery / preschool 140 12.9%
Kindergarten 33 3.0%
Elementary school 448 41.3%
High school 310 28.5%
College / grad school 155 14.3%
Employment
Industry of employment
Education & healthcare
17.8%
Professional & management
11.6%
Arts, food & hospitality
10.4%
Transportation & utilities
8.8%
Finance & real estate
6.5%
Public administration
6.2%
Agriculture & mining
0.6%
Occupation
Category %
Management, business & arts 41.5%
Service 17.7%
Sales & office 20.7%
Natural resources & construction 7.0%
Production & transportation 13.1%
Employment type
Type %
Private sector 84.5%
Government 12.7%
Self-employed 2.3%
Unpaid family workers 0.5%
Commute
Method %
Drive alone 78.2%
Carpool 6.0%
Public transit 0.0%
Walk 5.2%
Work from home 10.2%
Other means 0.4%
Avg commute (minutes) 22.8
Poverty
Married-couple families
5.7%
Female-led households
11.2%
Income support
Source % of households
Social Security 36.8%
Retirement income 36.4%
Supplemental Security 2.4%
Cash public assistance 4.7%
Food stamps / SNAP 8.1%
Health indicators
Condition %
Obesity 33.8%
High blood pressure 31.2%
High cholesterol 33.6%
Diabetes 9.8%
Heart disease 6.3%
Stroke 2.8%
Asthma 9.5%
Arthritis 26.7%
Kidney disease 2.7%
Pulmonary disease 6.8%
Cancer 7.0%
Behavior / access %
Smoking 16.9%
Binge drinking 15.5%
No physical activity 23.4%
Less than 7 hrs sleep 33.1%
Depression 18.7%
Fair or poor health 12.8%
Poor mental health 12.3%
Poor physical health 9.4%
No health insurance 9.0%
Visited doctor (checkup) 78.8%
Visited dentist 67.3%
Cholesterol screening 91.4%
Teeth loss 11.8%
Veterans & disability
Veterans Count %
Civilian veterans 224 6.6%
Disability %
Any disability 10.1%
Under 18 3.0%
18–64 years 6.9%
65 and over 27.4%
Health insurance coverage
Type %
Private insurance 78.5%
Public insurance 33.1%
No insurance 3.1%
Uninsured under 19 0.6%
Language & origin
Language spoken at home (age 5+)
Language Count %
English only 4,136 94.1%
Spanish 41 1.0%
Other Indo-European 27 0.7%
Asian & Pacific Islander 14 0.3%
Other languages 0 0.0%
Place of birth & citizenship
Origin Count %
Native born (US) 4,312 98.2%
Born in same state 4,309 98.1%
Born in different state 2,615 59.5%
Foreign born 3 0.1%
Naturalized citizen 81 1.8%
Not a US citizen 70 86.4%
Ancestry
Ancestry Count %
Italian 630 14.3%
French 479 10.9%
English 249 5.7%
Polish 102 2.3%
Ancestry Count %
Arab 79 1.8%
Norwegian 32 0.7%
Dutch 13 0.3%
German 6 0.1%
Technology access
Metric % of households
Computer access 39.3%
Internet access 93.6%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 61275
What city is ZIP code 61275 in?
ZIP code 61275 is primarily assigned to Port Byron, Illinois.
What county is ZIP code 61275 in?
ZIP code 61275 falls within Rock Island County, Illinois.
Is ZIP code 61275 mostly owner-occupied?
85% of occupied units in ZIP code 61275 are owner-occupied, well above the national average.
Does ZIP code 61275 have a large retiree population?
37% of households in ZIP code 61275 receive Social Security income, suggesting a significant retiree or disability population.
What is the population of ZIP code 61275?
ZIP code 61275 has an estimated population of 4,393 residents, with a density of 132 people per square mile.
What is the median household income in ZIP code 61275?
The median household income in ZIP code 61275 is $93,077, above the national median of ~$75,000.
What timezone is ZIP code 61275 in?
ZIP code 61275 observes the CST timezone.
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